Bunlaksananusorn, Chanin

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Preferred name
Bunlaksananusorn, Chanin
Alternative Name
Bunlaksananusorn, C.
Main Affiliation
Email
chanin.bu@kmitl.ac.th

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    Item type:Publication,
    Analysis and design of a zero-voltage-switched (ZVS) quasi-resonant buck converter operating in full-wave mode
    (2020-07-01)
    Wuti, Virot
    ;
    Luangpol, Amata
    ;
    Tattiwong, Kaweewat
    ;
    Trakuldit, Siripan
    ;
    Taylim, Alisala
    Hard-switching is typically used in most DC-DC converters, where transition of a power switch occurs when it still carries current and is subject to voltage at the same time. The hard-switching operation incurs high stress and switching losses to the device. These problems can be alleviated by zero voltage switching in which a power switch is made to turn on and off at zero voltage. This paper presents analysis and design of a Zero-Voltage-Switched (ZVS) quasi-resonant buck converter operating in full-wave mode. The prototype converter is designed and built. Test results show that the designed converter achieves zero voltage switching and possesses good output regulation throughout its operating range.
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    Item type:Publication,
    Simplified Analysis and Validation of a Two-switch Flyback Converter
    (2024-01-01)
    Wuti, Virot
    ;
    Bunlaksananusorn, Chanin
    ;
    Trakuldit, Siripan
    ;
    Tattiwong, Kaweewat
    ;
    Luangpol, Amata
    This paper presents a simplified analysis and validation of a two-switch flyback converter. When parasitic components, i.e. the MOSFET's output capacitance and transformer's leakage inductance, are neglected, circuit analysis of the two-switch flyback converter is greatly simplified and derivation of the converter equations becomes straightforward. The validity of the derived equations, which are useful for the converter design, is confirmed by simulation and experimental results.
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    A Simplified Analysis and Design of an RCD Clamp Forward Converter
    (2022-01-01)
    Wuti, Virot
    ;
    Trakuldit, Siripan
    ;
    Luangpol, Amata
    ;
    Tattiwong, Kaweewat
    ;
    Taylim, Alisala
    A conventional forward converter requires a transformer having an extra winding to assist in magnetic core reset, thus complicating the design and increasing the production cost. These shortcomings can be overcome by using an RCD clamp forward converter. This article presents a simplified analysis and design of the RCD clamp forward converter. The laboratory prototype is constructed. Experimental results demonstrates that the prototype converter is capable of providing a constant output voltage throughout its operating condition and has the maximum efficiency of 85%.